Water-insoluble (n-cyanoloweralkyl-n-acyloxyloweralkylamino)-phenylazo-benzene dyestuffs

ABSTRACT

THIS INVENTION RELATES TO WATER-INSOLUBLE MONOAZO DYESTUFFS HAVING A DIAZO COUPLED N-CYANO-LOWER-ALKYL, N-ACYLOXY-LOWER-ALKYL ANILINE STRUCTURE, WHICH DYESTUFFS DYE OR PRINT NATURAL AND SYNTHETIC FIBERS WITH GOOD FASTNESS PROPERTIES.

United States Patent 0 6 Int. Cl. C07c 107/00; C09b 29/08; D06p 1/06 US. Cl. 260-2071 3 Claims ABSTRACT OF THE DISCLOSURE This invention relates to Water-insoluble monoazo dyestufis having a diazo coupled N-cyano-lower-alkyl, N-acyloxy-lower-alkyl aniline structure, which dyestuffs dye or print natural and synthetic fibers with good fastness properties.

The water-insoluble dyestulfs of the present invention correspond to the following formula wherein These dyestuffs are obtained by (a) coupling 1 mol of the diazo compound of an amine free from water-solubilising groups having the formula 3,592,807 7 Patented July 13, 1971 R NH with 1 mol of a tertiary amine having the formula n Zu b) esterifying 1 mol of a monoazo dyestuif of the for mula cums-ON with 1 mol of a carboxylic acid having the formula R -OH or of a functional derivative thereof.

The dyestuifs of the present invention are suited for the dyeing and printing of textile materials made from natural and synthetic fibres, based on cellulose esters, synthetic polyamides, terephthalic acid esters and polyacrylonitrile. When applied onto these materials, they yield dyeings and prints that distinguish themselves by very good fastness properties. Moreover, the dyestuffs are partly suited as pigment dyestulfs for the dyeing of, for example, lacquers and plastics in the mass or as spin-dyes for synthetic fibers.

The following examples will further illustrate how our present invention may be carried out in practice, but the invention is not restricted to these examples.

EXAMPLE 1 37.3 g. :9.1 mol) 2,4-dichloro-5-methyl-[4'(N-cyanoethyl-N-hydroxyethyl-amino)-phenylazo]-benzene are dissolved in the heat, in 500 cc. ethylene chloride, and the resulting solution admixed with 18 g. (=0.l1 mol) butoxy-propionic acid chloride and heated until no more hydrochloric acid escapes and a sample taken is of a chromatographic uniformity. The solution is then reduced to a small volume, the reaction product is precipitated with alcohol, filtered off with suction, washed, and dried.

Yield: 41 g. of a yellow dyestuif powder that dyes polyester fibers yellow shades.

EXAMPLE 2 The dyestuffs as given in the table below may be prepared in the following manner:

0.1 mol of the diazo component are diazotized in the usual manner and added to a cold solution of 0.1 mol of the coupling component in 2 N-hydrochloric acid. Thereafter, sodium acetate is added until the mineral acid is neutralized and the dyestufi thus obtained is then isolated in the usual manner.

Shade of the dyeings on fibres based on polyethylene-glycol- Diazo component Coupling component terephthalate 2,4-dichloro-fi-methyl-aniline Butoxy-propionic acid ester of Yellow.

N-cyano-ethyl-N-hydroxylethylan.iline. 4-nitro-anjline .d Orange. 2-chloro-4-nitro-aniline. Brown-red. 2-amino-5-nitro-thiazol .do- Red-violet. 2,4-dich10ro5-methyl-aniline Phenoxy-acetic acid ester of Yellow N-cyano-ethyl-N-hydroxyethyl-aniline. 4-nitro-aniline "do Orange. 2-chloro-4-nitro-aniline do Brown-red. .%amino-5-nitro-thiazo1e ..d0 Red-violet. 2,4-diehloro-5 methyl aniline fl-Methoxy-isobutyric acid ester Yellow.

of N-cyano-ethyl-N-hydroxyethyl-anilin 4-nitro-anil1ne do Orange. 2-chloro-4-nitro-anlline .do. Brown-red. Z-amino-S-nitro-thiazole ..do Red-violet. 4cyano-aniline Phenoxy-acetie acid ester of Orange.

N-cyano-ethyl-N-hydroxyet yl-aniline.

Shade of the dyelngs on fibres based on polyethylene-glycol- Dluzo component Coupling component terephthalato QA-dicyano-aniline "do Red. QA-dinitro-anilino Red. 2-br0mo-4-nitro-an Red. 2-chloro+cyano-aniline. Red. 2-cyano4nitro-aniline Red. 2,4-dinitr06-bromo-anilinc Red. 2,4-dicyano-G-chloro-aniline d0 Red 2-0yano-4-nitr0-6-bromoaniline do Red. 2,S-dichloroAmino-aniline v v .do Brown 2-chloro-4-nitro-6-bromo-anilinc. A do. Do. 2,G-dichloro-4-cyan0-aniline. .d0 Do. 4-nitro-aniline PhenoXy-aoetic acid ester of Orange.

N-cyano-ethyl-Nhydroxyethyl-m-toluidino. .Z-cym1o-4-niLro-aniline do t. Red. 2,G-diChlOIO-PlfiCIO-HIUHHC do 5-nitro-2-amino-thiazolc do 2-br0m0-1-nitr0-aniline Phcnoxy-acctic acid ester of Red.

N-cyano-propyl-N-hydroxyethyl-aniline. 2, i-dinitro-B-bromo-aniliue "do t Bordeaux. 2,6-dibromo-i-nitro-aniline do t t r t Brown. 4-nitroanilin0 Phenoxy-acetic acid ester of Orange.

N-cyano-ethy1N-hydr0xypropyl-aniline. 2-chloro+nitro-anilinc do. Red. 2,4-dinitroo-bromo-anili do Bordeaux. 2 6 dichlor0-4'cyanoaniline. d0 Brown. --mmno-5-nitro-tl1iazole l "do" Red-violet. 4-cyano-nniline B-Butoxy t Orange.

of N-cyano-cthyl-N-hydroxyethyl-aniline. 2,4dicyanonniline do 2,4-dinitro-aniline. l do 2-1)romo-4-nitro-aniline do 2-chloro4-cyano-aniline do. Q-cyano-l-uitro-aniline "do" QA-dinitrdG-bromo-aniline do 2,4-dicyano-G-cliloro-nniline. do 2-cyano-4-nitro6-bromo-aniline r d0 2,G-dichloro-4-nitro-aniline. r .do 2-cl1loro-4-nitro-G-bromo-aniline. do. i 2,6 dichloro+cyano-aniline l "do" D 4-nitro-anilinc fl-Butoxy-propionie acid ester of Orange,

N-cyano-cthyl-N-hydroxyctliyl-m-chl0ro-anilinc. 2-ehloro-4-nitro-aniline do R d, 2,6-dicl1l0ro-4nitro-aniline 2-amino-5-nitro-thiazole 2,4-diehloroA-methyl-aniline -Ethoxyu y 1 Yellow.

N-cyano-ethyl-N-hydroxyethyl-aniline. 4-nitro-ani1ine do t Orange, 4-cyano-anilin D QA-dinitro-anihne 2,4-dieyano-aniline Q-chloro-tnitro-aniline 2-cyano- 1-uitro-aniline 2,-dinitloG-bromoeniliuc 2,4-dicyano-G-ohlorooniline.. Q-cyano-4-nitro-6-bromo-aniline. Z,6-dichloro-4-nitro-aniline. 2,6-dichloro-i cyano-anilinc 2-amino-5'nitro-thiazole. 4-cyano-aniline oi N-cyano-ethyl-N-hydroxyethyl-aniline. 2,4-dinitro-aniline do 2,4-dicyano-anilincdo Red. 2-cyano4-nitro-aniline do Red. 2,4-dinitro-dbromo-aniline do... Red. 2,4-dicyano-6-chlmoanillne do Red. 2-cyano4-nitro-6-hromo-aniline .do Red. 2,U-diClll010-i-l1iHO-alllllI16 ..do. Brown 2,6-dichlorokcyano-anilino do Do.

The dyestuffs can also be prepared in analogy to Exdimtrophenyl, halogenocyanophenyl, halogenonitroample 1 by estenfying the corresponding N-hydroxyalkyl phenyl, cyanonitrophenyl, halogenodicyanophenyl,

compounds with the respective ether carboxylic acid. 60

It will be understood that this invention is susceptible to further modification and accordingly, it is desired to comprehend such modifications within this invention as may fall within the scope of the appended claims.

We claim: 6 1. A water-insoluble monoazo dyestuff which corresponds to the formula bromo,

l CmH:mORz X wherein R stands for an aromatic radical selected from the group consisting of cyanophenyl, nitrophenyl, dicyanophenyl,

halogenodinitrophenyl, halogenonitrocyanophenyl, dihalogenocyanophenyl, dihalogenotolyl and dihalogenonitrophenyl, each halogeno referring to chloro or X stands for a member selected from the group consisting of hydrogen, bromine, chlorine and lower alkyl,

11 and m are integers of 2 through 3,

R stands for an acyl radical selected from the group consisting of phenoxyacetyl, lower fi-alkoxypropionyl, lower 'y-alkoxybutyryl and lower fl-alkoxyisobutyryl. 2. A water-insoluble monoazo dyestufi which corresponds to the formula 5 6 wherein bromonitrophenyl, cyanonitrophenyl, chlorodinitro- R stands for a member of the group consisting of nitrophenyl .bromodlmtrophenyl dxchloromtmphenyl or phenyl, chloronitrophenyl, cyanonitrophenyl, and dilnomomtrophenyl chlorom-tmphenyl X 1s hydrogen or lower alkyl, and

R stands for an acyl radical selected from the group 5 m areintegers of Zthrough consisting of phenoxyacetyl, lower fi-alkoxypropionyl, lower 'y-alkoxybutyryl, and lower fl-alkoxyisobutyryl. References cued 3. A water-insoluble monoazo dyestuff of the formula UNITED S S T TS C,,H .,CN 2,891,942 6/1959 Merian 260-207.1 10 E FLOYD DALE HIGEL, Primary Examiner omH2m-0 -oH2-o- X us. (:1. X.R. wherein R is dicyanophenyl, nitrophenyl, dinitrophenyl, chloro- 41; 106 288; 1171388 144; 260 37 158 0 cyanophenyl, bromocyanophenyl, chloronitrophenyl,

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION 3,59 ,807 July 13, 1971 Po-1o5o (5/69) Patent No Dated Inventofls)- Hanswilli von Brachel and Otto Greuinger It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

(301. 2, lines 3-7, the formula should read:

line 33, "9.1" should read 0.1

Col. 3, the fortieth "Diazo component" should read 2, 4-

dich1oro-5-methyl-anilineI--5 the fifty-third Diezo component" should read --4-cyano-an1l1ne--;

J the fifty-third "Coupling component" should read -==-6-Methoxyisobutyric acid ester of Ncyano-ethyl-N- hydroxyethyl-aniline Signed and sealed tl'is 22nd day of February 1972.

{SEAL} Attest:

ROBERT GOTTSCHALK EDI JAQRD M.FLETCHER, JR.

Commissioner of Patents Attesting Officer 

